Method of converting zinc powder into fluid zinc



METHOD OF CONVERTING ZINC POWDER INTO FLUID ZINC FilQd Fab. 2, 1922 mummnfmmumm lzvvczvm 1.5.271? Lulu;

Patented Aug. 26, 1924.

UNITED STATES PATENT OFFICE.

METHOD OF CONVERTING ZINC POWDER INTO FLUID ZINC.

Application filed February 2, 1922. Serial No. 583,702.

To all whom it may concern:

Be it known that I, EDWARD SALOMON BERGLUND, a subject of the King of Sweden, resident of Dju'rsholm, Sweden, have invented certain new and useful Im rovements in the Methods of Converting Zinc Powder into Fluid Zinc, of which thefollowing is a specification.

Among the devices, which have been proposed for treating metal powder, so called poussiere, generated during the condensation of zinc and lead obtained by electrothermic extraction of ore, there are devices in which the condenser is provided with a movable art or bottom. To said movable part has een imparted a rotating, oscillating or a rapidly reciprocating motion. The two latter forms of motion have the common inconveniences, that they require a comparatively great amount of power, and that the mechanical arran ements are exposed to great strains. ThlS is due to the fact that a rather heavy part of the condenser has to be rapidly moved to and fro. The arrangement of a rotating bottom part of the condenser, in the form previously proposed, is also ineffective.

The last mentioned arrangement, which is the most convenient of the three arrangements mentioned, may however be improved and made so efiective, that a satisfactory extraction of metal can be obtained by the construction described below.

The arrangements are shown on the accompanying drawing, in which Fig. 1 shows a vertical section of the lower part of a condenser, whereas Fig. 2 is a horizontal section of the same.

In Fig. 1 a is a condenser pipe, I) amovable receiver. From the pipe tooth-like projections a forming stirring members depend, consistin of fire proof stone, which during the rotation of the bottom, stir the powder. Moreover in the condenser pipe a a cross d or a frame or the like of fire proof material may be placed from which similar toothlike projections depend toward the bottom (see ig. 2). I

The movable part b has imparted'thereto such a speed of rotation, thatit works as a centrifugal machine, whereby the small metal drops contained in the powder, are thrown towards the periphery and upwards along the sloping edges of the bottom, and fall down in the channel 70, from which the metal is tapped through the hole 6. The oxide formed is raked through the hole 9.

Having now described my invention, what I claim and desire to secure by Letters Patent is 1. A method of converting zinc powder into fluid zinc which consists in simultaneously stirring the powder as it comes from a condenser pipe, and subjecting the said powder to centrifugal force, whereby conversion to the fluid state and cohesion of the fluid particles is effected as well as separation of oxide from the fluid metal formed.

2. In apparatus for converting zinc powder into fluid zinc, a condenser pipe having tooth-like projections depending from the end thereof, a rotatable receiver for the powder into which said projections are adapted to dip, said receiver having a flat bottom upwardly sloping towards the periphery, and a channel at the periphery thereof for receiving the fluid metal.

3. In apparatus powder into fluid zinc, a condenser ipe having tooth-like projections depen ing diametrically from the end thereof, a rotatable receiver for the powder, into which said projections are adapted to dip, said receiver having a flat bottom upwardly sloping towards the periphery, and a channel at the periphery thereof for receiving the fluid metal.

4. In apparatus for converting zinc powder into fluid zinc, a condenser pipe having tooth-like projections depending from the end thereof arranged circumferentially and diametrically, a rotatable receiver for the powder into which said projections are adapted to dip, said receiver having a flat bottom upwardly sloping towards the periphery, and a channel at the periphery thereof for receiving the fluid metal.

In testimony whereof I have signed my name to this specification.

EDWARD SALOMON BERGLUND.

Witnesses:

SV'EN SvENsoN, KATHERINE K. VANDERVOORT.

for converting zinc 

